The important work of moving the world forward does not wait to be done by perfect men. George Eliot
Do not wait for the Last Judgment. It takes place every day. Albert Camus
Do not wait to strike till the iron is hot; but make it hot by striking. William Butler Yeats
Time does not wait for anyone. Pakistani Proverb
Seven people do not wait for one person. Khakas Proverb
Do not wait until tomorrow to hunt. Nilotic Proverb